William blackburn and samuel blackburn



(No Model.)

W. & S. BLACKBURN.

TIGHTENBR FOR SPINDLE BANDS 0F SPINNING MACHINES.

Patented Jan. 18,1887;

'the pulleys, respectively.

STATES PATENT Orrrce.

\VILLIAM BLACKBURN AND SAMUEL BLACKBURN, OF CLECKHEATON, COUNTY OF YORK,ENGLAND.

TtGHTENER FOR SPINDLE-BANDS OF SPINNING-MACHINES.

$PECIPICATION forming part of Letters Patent No. 356,239, dated January18, 1887.

Application tiled May 173, 1886. Serial No. 202,069. (No model.)Patented in England March 20, 1885, No. 3,605.

To all whom it may concern:

Be it k uown that we,W1LLIAM BLACKBURN and SAMUEL BLACKBURN, subjects ofthe Queen of Great Britain, residing at Cleckheaton, in the county ofYork, England, have invented new and useful Improvements in Tightenersfor Spindle-Bands of Spinning- Machines, (for which we obtained a patentin Great Britain, No. 3,605, March 20, 1885,) of which the following isa specification.

The object of this invention is to give along traverse and so use longbobbins; also, to insure a regular twist in spinning and twistingfibers, and to take up the bands automatically as the tubes of thespindles rise and fall; also, to de liver the bands onto the whirls in adirect straight line. XVe attain these objects by mechanism illustratedin the accompanying drawings, in which Figure lshowsa portion ofaspinning-frame in elevation and partlyiu section with ourimprovementsattached. Figs. 2 and 3 show details of self-lubricating pulleys.

WVe employ two loose pulleys, A A, for each spindle B, between the tincylinder Dand the whirls E, the bands running under and over Each set ofthe pulleys is carried by a forked lever, F, which is pivoted on asecond pivoted lever, H,which is carried by a bar or rail, J. The otherend of the fork-lever, F, carries a compensatingweight, C, adjustable bythe slot K and screw G, and acting automatically to regulate the balanceof the fork and pulleys. The other end of the second pivoted lever, H,is formed with a balance-weight at its end M, acting automatically-whenthe lifter-rail I and tube ofthe spindle are in the center of theirlift. The pulleys A take up the slack of the bands B, when moved nearerthe tin cylinder D, by means of the second pivoted lever, H. When a bandbreaks the lever H moves forward by reason ofits weighted end M, asshown in dotted lines, and is prevented from coming in contact with thecylinder by pressure of the flat bar J within a notch, L, formed in saidlever.

The pulleys A A are self-lubricating, the studs N being hollow and splitor perforated,

and contain a fibrous material, I which is u saturated with lubricant.The fork and pulleys may be pivoted on a shaft, if preferred.

What we claim as the invention,and desire to secure by Letters Patent,is

The combination of the spindles B B, cylinder D, bands R, rails J .T,the weightedlevers H H, engaging said rails, the forked leversF F,pivoted on the levers H H and provided with adjustable weights C C, andthe pulleys A A, carried by the levers F F, substantially as described.

\VM. BLACKBURN. SAML. BLACKBURN.

Witnesses:

JOHN S. WALSH,

Orossley Street, Halifax. B1). B. NIoHoLLs.

